Sorry to kind of spam, it was much easier to fix it than I thought it would be. Hacking wine isn't so hard after all......
input.c line 970 should be:
PostMessageA(TrackingList[i].tme.hwndTrack, WM_MOUSEHOVER, get_key_state() , (pos.y << 8) + (pos.x));
I didn't think it was worth sending to wine-patches as it's just a 1 line fix and I didn't do it against wine cvs, but the last tarball release. That solves all my mouse handling issues with the ASV, so I'm a happy person once more. If somebody could apply that patch that'd be fab.
thanks -mike